250 VETERINARY SURGICAL THERAPEUTICS. 
, Grams 
NOEWAYy tai a i deimneguiiiains Cohacaen Aone R ea eka eae neue RSS 450 
GrECH=SOAP a. i0:d0-0 a ndsceainae woe eae Res ENTE dG Cee ae eS 450 
TART POWOED yo .0.0 ns sarrcidaweews Gio aa eee ee eseaewee eta 100 
“ Every day, after stirring the mixture, a simple painting with a brush 
is made without friction. This application is renewed every day without 
taking notice of what takes place or being frightened at the sloughing 
of large epidermic patches, which come off after several days of treat- 
ment, and which must take place without interruption until recovery. No 
accident is to be feared, for no serious consequence and no scars have ever 
followed.” 
Irritating frictions (turpentine, ammonia, spirits of lavender) or blisters 
(charges) ordinarily fail. Straight-line or needle firing is more efficacious ; 
some obstinate hygromas are relieved by cauterization, when the cause of 
the trouble has also been removed. 
The crushing of the pouch, which is possible when the walls are thin, 
is not sufficient: the exudation returns. 
Aseptic puncture with trocar or bistoury does not succeed better; it 
permits the escape of the contents’ of the tumor, but the wound cicatrizes 
rapidly ; the internal unmodified membrane continues to secrete and the 
fluid collection returns. The puncture must be completed by an irritating: 
injection. Solutions of iodine succeed well in the treatment of hygromas 
with thin walls. The modus operandi is described in the chapter on 
Tendinous Hygromas. No serious complications need be looked for. 
Other agents than iodine may be used: carbolic acid, 3-5 percent. ; cor- 
rosive sublimate, 1 in 1000 or 500; thymic acid and a mixture of ergotine 
and muriate of morphine give similar results. It is good, if possible, to 
add pressure after the zajection by a wadded dressing, or better, an elastic 
bandage. The last is advised for the knee and fetlock to insure and ac- 
celerate recovery. 
Drainage is sometimes used successfully against some hygromas. Or- 
dinarily a seton, tape, or long tent of oakum is passed through the vertical 
axis of the tumor. This means, which brings on recovery by the suppura- 
tion of the pouch, is objectionable, since it leaves two cicatrices; and if 
the ends of the seton are tied up, it allows the possible tearing of the skin. 
It is better to have recourse to a drainage-tube fixed by a stitch of suture 
or a safety-pin. Dependent puncture, fixation of a short drain and ir- 
ritating injections constitute a good treatment. 
Subcutaneous discisston is a delicate operation, too commonly followed 
by a return of the trouble to be recommended. Ordinary zucision is pre- 
ferable. After disinfection of the surfaces the pouch is freely opened, the 
fluid allowed to escape, the clots removed, the rice-formed masses extrac- 
